Automatic heat-regulator for incubators



l wsgg C. WIEDNER.

AUTOMATIC HEAT REGULATOR FOR INCUBATORS. APPLICATION man mum 1.9m.

Patented 29, 1921.

3 SHEETS-SHEET l.

vC. WIEDNER.

AUTOMATIC HEAT REGULATOR FOR INCUBATORS.

APPLICATION HLEDJAN. I. 1919.

1,3? 8. 226 Patented Mar. 29, 1921.

3 SHEETS-SHEET 2- T42 mf m i7" v 5/ 2 I 'C. WIEDNER. AUTOMATIC HEAT REGULATOR FOR INCUBATORS.

- 7 APPLICATION FILED JAN-7, 1919. 1,373,282., Patented. Mar. 29, 1921.

. 3 SHEETS- HEET 3. v

' intense.

srrrs CHARLES wrnmvnn, or OIBOLO, TEXAS.

I Specification of Letters iatent. Patgnfed Di 29 IQZ Application filed January 7, 1919. Serial No. 270,035.

T0 taller/710m 2'25 may concern Be itknown that I, CHARLns VVIEDNER, a citizen of the United States, residing at Cibolo, in the county of Guadalupe and State of Texas, have invented new and useful Improvements in Automatic Heat-Begulators ior Incubators, of whichthe following a specification.

ltis the principal aim-and object of the present invention to provide a device of the above mentioned character designedto be operably mounted within an incubator'and on the heating lamptherefor and capable of being adjusted so as to insure of the extinguishing of the lamp when the temperature within the incubator casing reaches a predeterminedpoint. v

ltis an addition'aland equally important object of this invention to provide a device of-the above mentioned character wherein the thermostat carryinglever is operably connected with the wick extinguisher fOreX tinguishing the flame of the lamp when the temperature reaches a predetermined point and for subsequently raising the damper of the lamp casing should the heat within the casing'go above-the predetermined point.

More particularly the present invention contemplates the provision of a device of the above mentioned character wherein the main actuating lever is mounted so that it will be moved downwardly by the diaphragm to consequently cause the successive actuation of the wick extinguishing carryinglever and the damper carrying lever, an operably mounted bell crank lever being arrangedbetween the extinguisher carrying lever and the diaphragm carrying lever and between the damper carrying lever and the diaphragm carrying lever-for lnsuring of the proper actuation of the parts at thedesired time. I y

it is a mor'e sp'ecific object of this inven= tion to provide a'- devlce of the above mentioned character wherein a spring tensioned connection is provided between the extinguisher carrying lever and the bell crank lever for insuringthe proper actuation of the wick extinguisl'ier; to also construct the wick extinguisher of suehvsize in relation to the lamp wick-so'that the extinguisher will leave'a small portion near one end ofthe' wick freeto burn in order that such portion may act' as a pilot .for'thel'ighting of the entire wick at the time the temperature within the casing gets colder for the contracting of the diaphragm.

Other improvements and novel details in the construction and arrangement of the various parts of the apparatus will be brought out more 1n detailin the description to follow, which for a clear understanding of the nventlon should-be considered in connection with the accompanying drawings forming a part hereof, and wherein is disclosed for the purpose of illustration a convenient and satisfactory embodiment of'the invention. It is to be noted in this conned t on that minor changes in the construction and arrangement of parts may be made Without departing from the principle oloperation of the various parts. The invention is clearly illustrated in the accompanying drawings, in which:

Figure 1 is a front elevation of the vention applied to an incubator.

Fig. 2' is a top plan view thereof Fig.- 3 is a side elevation of the inven-' tion the casing being shown in section.

Fig. dis a perspective detail of the thermostatic cracker carrying lever. I Fig. 5, is "a detail of the extinguisher carrying lever.

Fig.6 is a detail of the damper carrying lever. Fig.7 is a detail of the bell crank lever.

Fig.8 is adetail view showing the extinguisher and its. acti'iating partsin extended positloin Fig. 9 is a detail view showing the damper ill-l carrying lever raised, and

- Fig. 10' is detail sectional view of the upper thermostatic crackers and shows the means by which they are suspended from are communicated to the heatdrum 5 supported on the casing above the lamp. this connection it isito be understood that the particular construction or the lamp and the drum formno essential part ofthe invention but are merely illustrating the ad vantages of the automatic heat regulator generally designated 6 which is operably connected to the casing, lamp and drum, the drum communicating through the passage 12. p V.

In reducing the present invention to prac tice a supporting plate 7 is connected to and arranged vertically on the drum '5 being formed at its upper end with an extension 8. v

Also projecting from this casing or. drum is an arm 9. which is arranged parallel to and in closely spaced relation with the plate 7.

In order to regulatethe flame onthe major portion of the wick4 of the lamp alever 10 is employed and has its upper end bent upon itself as at 11. while the bent portion 11 and the adjacent main portion are provided with opposed pairs of openings 13 and these portions are straddledabout the arm 9 and pivotally connected thereto by means of a pintle 1.2. A flame dimmer 13 is now employed and consists of a relatively straight body of an inverted channel shaped configuration in cross section the inner end of which is bifurcated leaving arms 14 which are pivotally connected in straddled relation about the lower end of the lever 10 by means of a pintle 15. The body of the member 13 is slidably supported on .a tongue formed integral with the chimney support 17 of the lamp and in the bottom. of .a recess 18 which is provided in the support. This tongue serves to guide the flame dimmer so that the body thereofwill straddle the major portion of the wick 4 when extended in a manner that will hereinafter become apparent. A bracket 19 is connected to the lower portion or the plate and forms a guide the ends of which serve as a means for limiting. the swinging movement of the lever 10. A spring member 20 is now employed for normally holding the flame dimmer and its lever inv a retracted position and consists of a single piece of wire bent intermediate its ends to provide a coil 21, and arms 22 which terminate in ribs 23 engageable with openings,

24 in the lever and in the plate. With a view toward providing suitable means for imparting a swinging movement to the lever 10 a bell crank lever generally designatedby the numeral 25 is employed and is pivoted on the pintle 12 and lies between the lever 10 and the plate. An ear 26 is formed on the vertical portion ofthe lever 25 at the inner edge while through this' ear is ar-;

ranged a screw rod 27. the inner end of which terminates in aneye 28 swmgably connected by means of a pintle 29 between thebent portion and the main portion of the lever 10, A coil spring 30 is arranged about the extendedportion of the rod 27 and the rod is engaged by a knurlednut 31 which regulates the pressure of the spring 30011 the bell crank lever 25. ,By the arrange ment of the ear 26. against the outer side with the casing p l be swung to an extended position wlt-hout edge of the lever 10 near its upper end, it will be appreciated that when the spring 80 is properly adjusted on downward swinging ofthe bell crank lever the lever 10 will allowing independent swinging movement of the bell crank lever relative to the lever 10 for a purpose that will become apparent.

With a view toward providing suitable means for allowing the heat to escape through the outlet at the top of the drum subsequent to the actuation of the flame .dimmer'the upper portion of the bell crank lever has its inner edge inclined as at 32 and itszextreme terminal bent inwardly to form a catch 33 designed for engagement with a. knob 34 formed-medially of the ends of a lever 35. This lever 85 is pivoted by means or" a pintle36 to the extension 8 at a point beneath the knob and has one portion twisted as at 86 while a damper 37 is connected cen trally to the outer end of the twisted portion and normally arranged over the outlet of the drum. The counter-balancing weight 38. is formed on the opposite end of the lever 35. By'this arrangement it will be appreciated that the spring 30isregulated so that the catch 33 will not engage the knob until the lever 10 has been extended then on continned: downward movement of the bell crank lever the catch will engage the knob so as to swing the lever 85 and raise the damper 137 from the outlet of the drum allowing the heat to escape therefrom. Suitable thermostatic means havebeen provided for actuating the several levers and in reducing this feature of the invention to-prac tice a bracket generally designated by the numeral 39 is employed being formed from employed and carries a pair of disk thermo static crackers 45 the stud being inserted through the opening in the intermediate portion 40 of the bracket 39 and formed with an annular groove 46 in which is remov ably fitted a spring clip 47 for removably supporting the crackers in a suspended position beneath the intermediate portion. An arm 48 continues from one of the feet.42 of the bracket and depends beneath the intermediate portion being parallel with one of I the arms 41 of the bracket while swingably eonnectedby means of a hinge 49 to the 1 lowerend of the arm 48 isa lever 50 The inner portion of the lever is formed with an openlng in which is fitted a'stud 51 which carries at its upper end and above the lever a pairqof thermostatic crackers 52 similar in construction to the crackers 45 and dis- 39 rposed immediately beneath the crackers 4 5.

1 The stud 5l-aliningthestud 44 is formed near its lowerlend with an annular groove and is movably arranged through a vertical slot 54inthe casing the outer end thereof terminating in an eye 55 through which is arranged a threaded rod 56. The upper end of this rod is formed with a hook 57 for piv otally and detachably engaging with the outer-end of the horizontal portion of the bell crank lever 25 while a knurled nut58'is detachably connected to, the lower portion of the rod and serves as a means-tor 'regulat-' ing the distance between the lever 50 and the bell crank lever 25.v

In use, assuming that the spring 30 has been adjusted so that the leverlO will move in an extended position beforef the catch on the bell crank lever strikes thestud, when the heat in the casing 1 goes-above a predetermined temperature such as 102 Farenheit the crackers will expand to insure of the depressing of the lever 50 which owing to the connection of therod 56 between the lever 50 and the bell crank lever, the latter lever will be caused to swing about its pivot.

Now by reason of the fact that the spring 30 is tensioned to cause the swinging of the lever 10 with the bell crank lever the said lever 10 will be swung into an extended position against the tension of the spring member 20 so as to consequently slide the flame dimmer over the wick leaving only a part of the wick exposed and thus shutting off the transmission of heat to the drum. If

the temperature within the casing rises above 102 or 104 the crackers will expand still further assuring of a continued swinging of the bell crank lever so that the catch 33 will engage the knob 34 and raise the damper 37 from the outlet of the drum and allow the heat to escape therefrom. Now when the temperature within the casing diminishes the crackers will contract allowingthe bell crank lever to swing away from the knob and this movement is assured by the spring 30 consequently permitting the damper 37 to close the outlet of the drum and, of course, the springQO assures of the return of the lever 10 and the removal of the dimmer from the wick permitting the major from the lamp and connected with the casing and provided with a passage therethrough I for the products of combustion, a damper closing the drum, a swingingly mounted bell crank lever, thermostatic means for operating said lever, a reciprocablymounted flame dimmer, operative connections between the bell crank lever and the damper and the flame dimmer, and resilient means inter posed in said connections,whereby on the at-' tainment of a specified temperature, the flame dimmer may be'operated todampen the flame and the damper ofthedrum simul taneously raised. 1 i

, -2.- A device of the character described ineluding in combination, a casing, a lamp and a heating drum "connected to the casing above through for the products of combustion, a lever swingably connected to the drum; a flame dimmer operably connected to the lever and s'lidably mounted through the lamp, anothenlever swingably mounted on the drum, a damper carried by thelastmentioned lever, a bell' crank lever swingably connected to the drum, spring pressure means connected to the first mentioned lever and the bell crank lever and adjustable to insure the swinging of the first mentioned lever with the bell crank'lever, cooperative the lamp andprovided with a passagethere- I means on the bell crank lever and the dam- 3. A device of the character described in- I eluding in combination, a casing, a lamp having a wick therein and a heating drum connected to the casing and positioned above the lamp and provided with a passage therethrough for the products of combustion, a

plate carried by the drum, a lever swingably s I connected to the plate, a flame dimmer reciprocably connected to the lower end of the a lever, means on the lamp for slidably supporting and guiding the flame dimmer, means on the plate for limiting the swinging movement of the lever to consequently regulate the movement of the dimmer, resilient means for normally holding the dimer retracted, a bell crank lever swingably connected to the plate, spring pressure means between the first mentioned lever and the bell crank lever forinsuring'the. movement of the first mentioned lever with the bell crank lever, a catch formed on one end of the bell crank lever, a damper disposed above the drum, a swingably mounted member connected to the plate for carrying the lever, a knob onthe last mentioned lever engageable 'by the catch for insuring the raising of the damper subsequent to the actuation of the dimmena bracket within the casing, another lever swing-ably connected to the-bracket and adjustably connected to. the bell crank lever,

and thermostatic crackers connected to the bracket and to the last mentioned lever for controlling the actuation of all of the levers. 4. A device of the character described including in combination a casing, a lamp,and a drum connected to the casinganddisposed above the lamp and provided With a passage therethrough for the products of combustion, a swingably mounted lever, a flame dimmerconnected to the lever and theilamp, a swingably mounted damper for the drum, a swingthe casing andoperably connected to the bell crank lever for controllingthe actuation ofthe flame dimmer and the damper. 5. A device of the characterrdescribed'ineluding incombination, an incubator casing, a

alamp havingqa Wick, and"a heati11g. drum connected to the casingand disposed above the lamp and pro'videdwith a passage therethrough for the products of combustion, a slidablymounted flame extinguisher for the Wick, a swingably mounted damper arranged above the drum, a bracket Within the casing, a lever swin gably connected to the bracket,

cooperative thermostatic crackers carried by the bracketnnd thelever for swinging the lever, meansoperab-ly arranged between the flame dimmer and the damper for insuring of the sliding of the dimmer preparatory to the raising of the damper,-;operabl'econnection between saidlast mentioned means and thezlever for insuring ofthe actuation of the parts, and. resilient means for automatically returning the 'partsto their former positions subsequent to the contraction of the thermostatic crackers.

In testimony whereof I affi X signature. a

r CHAR-LES WIEDN'ER' 

